objects/pen.c

   1 /*
   2  * GDI pen objects
   3  *
   4  * Copyright 1993 Alexandre Julliard
   5  */
   6
   7 #include "pen.h"
   8 #include "metafile.h"
   9 #include "stddebug.h"
  10 #include "color.h"
  11 #include "debug.h"
  12
  13 /***********************************************************************
  14  *           CreatePen    (GDI.61)
  15  */
  16 HPEN CreatePen( short style, short width, COLORREF color )
  17 {
  18     LOGPEN logpen = { style, { width, 0 }, color };
  19     dprintf_gdi(stddeb, "CreatePen: %d %d %06lx\n", style, width, color );
  20     return CreatePenIndirect( &logpen );
  21 }
  22
  23
  24 /***********************************************************************
  25  *           CreatePenIndirect    (GDI.62)
  26  */
  27 HPEN CreatePenIndirect( LOGPEN * pen )
  28 {
  29     PENOBJ * penPtr;
  30     HPEN hpen;
  31
  32     if (pen->lopnStyle > PS_INSIDEFRAME) return 0;
  33     hpen = GDI_AllocObject( sizeof(PENOBJ), PEN_MAGIC );
  34     if (!hpen) return 0;
  35     penPtr = (PENOBJ *) GDI_HEAP_LIN_ADDR( hpen );
  36     memcpy( &penPtr->logpen, pen, sizeof(LOGPEN) );
  37     return hpen;
  38 }
  39
  40
  41 /***********************************************************************
  42  *           PEN_GetObject
  43  */
  44 int PEN_GetObject( PENOBJ * pen, int count, LPSTR buffer )
  45 {
  46     if (count > sizeof(LOGPEN)) count = sizeof(LOGPEN);
  47     memcpy( buffer, &pen->logpen, count );
  48     return count;
  49 }
  50
  51
  52 /***********************************************************************
  53  *           PEN_SelectObject
  54  */
  55 HPEN PEN_SelectObject( DC * dc, HPEN hpen, PENOBJ * pen )
  56 {
  57     static char dash_dash[]       = { 5, 3 };      /* -----   -----   -----  */
  58     static char dash_dot[]        = { 2, 2 };      /* --  --  --  --  --  -- */
  59     static char dash_dashdot[]    = { 4,3,2,3 };   /* ----   --   ----   --  */
  60     static char dash_dashdotdot[] = { 4,2,2,2,2,2 };  /* ----  --  --  ----  */
  61     HPEN prevHandle = dc->w.hPen;
  62
  63     if (dc->header.wMagic == METAFILE_DC_MAGIC)
  64         return MF_CreatePenIndirect(dc, hpen, &(pen->logpen));
  65
  66     dc->w.hPen = hpen;
  67
  68     dc->u.x.pen.style = pen->logpen.lopnStyle;
  69     dc->u.x.pen.width = pen->logpen.lopnWidth.x * dc->w.VportExtX
  70                           / dc->w.WndExtX;
  71     if (dc->u.x.pen.width < 0) dc->u.x.pen.width = -dc->u.x.pen.width;
  72     if (dc->u.x.pen.width == 1) dc->u.x.pen.width = 0;  /* Faster */
  73     dc->u.x.pen.pixel = COLOR_ToPhysical( dc, pen->logpen.lopnColor );
  74     switch(pen->logpen.lopnStyle)
  75     {
  76       case PS_DASH:
  77         dc->u.x.pen.dashes = dash_dash;
  78         dc->u.x.pen.dash_len = 2;
  79         break;
  80       case PS_DOT:
  81         dc->u.x.pen.dashes = dash_dot;
  82         dc->u.x.pen.dash_len = 2;
  83         break;
  84       case PS_DASHDOT:
  85         dc->u.x.pen.dashes = dash_dashdot;
  86         dc->u.x.pen.dash_len = 4;
  87         break;
  88       case PS_DASHDOTDOT:
  89         dc->u.x.pen.dashes = dash_dashdotdot;
  90         dc->u.x.pen.dash_len = 6;
  91         break;
  92     }
  93
  94     return prevHandle;
  95 }